June 2001
Intermediate to advanced
706 pages
24h 10m
English
Public Const WM_MBUTTONDBLCLK = &H209
wParam
Contains the virtual keys pressed when this message is posted; can be one or more of the following, defined in Appendix C:
MK_CONTROL
|
MK_LBUTTON
|
MK_RBUTTON
|
MK_MBUTTON
|
MK_SHIFT
|
MK_XBUTTON1
|
MK_XBUTTON2
|
lParam
The low-order word contains the x-coordinate of the mouse pointer; the high-order word contains the y-coordinate of the mouse pointer.
Posted to the window over which the middle mouse button is double-clicked.
0 only if the application processes this message.
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